One of the first opponents of the atomic theory was
A)
Socrates
B)
Aristotle
C)
Sophocles
D)
Democritus
2.
Why does mass appear to be lost in a reaction involving burning in an open system?
A)
Matter escapes as a gas.
B)
Matter as ashes is smaller than the starting material.
C)
Matter is made less dense in the burning process.
D)
Burning causes the loss of matter.
3.
If 8.0 g of hydrofluoric acid reacts with 16.0 g of sodium hydroxide, producing 16.8 g of sodium fluoride, how much water is also produced?
A)
16.0 g
B)
24.0 g
C)
7.2 g
D)
0.8 g
4.
The observation that all samples of tin always appear to be a metal is an example of what idea within Dalton's atomic theory?
A)
All matter is made up of tiny particles called atoms.
B)
All atoms of a given element are identical.
C)
Atoms combine in simple, whole number ratios.
D)
Atoms are neither created nor destroyed in a chemical reaction.
5.
In science, isotopes are used
A)
As tracers
B)
As tags
C)
Both of the above
D)
Neither of the above
6.
How many electrons are in all atoms of phosphorous?
A)
15
B)
30
C)
31
D)
16
7.
The isotope of gallium with the symbol 6931Ga has how many protons?
A)
38
B)
31
C)
69
D)
27
8.
In the case study, the chemists were able to test for human remains by
A)
Analyzing DNA
B)
Testing for a silicon content less than 1%.
C)
Testing for a silicon content greater than 16%.
D)
Testing for a selenium content less than 1%.
9.
How many neutrons does uranium – 235 contain?
A)
92
B)
140
C)
143
D)
235
10.
How many neutrons are in the isotope of germanium with the symbol 7232Ge?
A)
40
B)
32
C)
72
D)
104
11.
A line spectrum
A)
only contains radio rays
B)
is the same as a wave
C)
is unique to each element
D)
is the same as frequency
12.
An element has Z = 38 and 50 neutrons. What element and isotope is it?
A)
5038Sr
B)
8838Sr
C)
3850Sn
D)
8850Sn
13.
If the atomic mass of boron is 10.81, which isotope of boron is most likely the major one?
A)
11
B)
10
C)
12
D)
9
14.
What colors of light appear in a continuous spectrum?
A)
red wavelengths
B)
blue wavelengths
C)
all wavelengths
D)
orange – yellow wavelengths
15.
What is a photon?
A)
excess energy absorbed by a proton
B)
excess energy emitted from a neutron
C)
excess energy absorbed by an electron
D)
excess energy emitted from an electron
16.
What is the orbital of an electron?
A)
a loop-like planetary trajectory with the lowest probability of finding the electron
B)
a loop-like planetary trajectory with the highest probability of finding the electron
C)
the region of space with the lowest probability of finding the electron
D)
the region of space with the highest probability of finding the electron
17.
An s orbital has what shape?
A)
circular
B)
spherical
C)
oblong
D)
dumbbell
18.
How many f orbitals are there?
A)
1
B)
3
C)
5
D)
7
19.
How many electrons are in a single orbital?
A)
2
B)
4
C)
6
D)
8
20.
The law of multiple proportions states
A)
If the momentum of an electron is known then the exact location is not known
B)
Two or more elements can combine in different whole number ratios.
C)
Elements consist of tiny particles called atoms
D)
A compound is always made up of the same ratio of elements
Math: show all work in solving the following. Be sure to use units of measure and significant figures. C= 3.0x 108 m/s and h= 6.63x 10-34 J*s 21. What is the frequency of light with a wavelength of 9 ´ 104 m? 22. Find the energy in Joules for a 500nm wavelength. 23. Find the weighted average for Calcium if Calcium- 40 is 90% abundant, Calcium 38 is 6% abundant and Calcium 42 is 4% abundant. (You must show work for full credit) Short answer/essay: answer the following in the space provided.
24.
Which element has the electron configuration of 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p2?
25. Write the full or abbreviated electron configuration for indium.
26.
Write the full electron configuration for manganese.
27.
Phosphorous and oxygen at 75o C always produce P2O5, what law is this and why?
28.
In Thomson's experiment, it was concluded that the type of gas used did not matter. What was Thomson's experiment and why is the conclusion about the type of gas important?
29. State the four parts of Dalton's atomic theory and explain how it supports the law of conservation of mass.
30.
Lavoisier came up with the law of conservation of mass, up until Lavoisier, people believed that matter was lost or created. What did Lavoisier do differently?
31.
What is the difference between a continuous spectrum and a line spectrum.
32.
Explain the contribution of 4 of the following people: Democritus, Proust, Chadwick, Goldstein, and Rutherford
33.
How do atoms produce light? Why would someone working with fireworks need to know about line spectrums?
34.
Name the three sub atomic particles, give their charge, and where each is found in the atom.
35.
What was Gassendi's role in the development of the atom and how did religion play a role in the development of the atom?
Fall reviews page 2
Multiple Choice: circle the best answer:
Math: show all work in solving the following. Be sure to use units of measure and significant figures. C= 3.0x 108 m/s and h= 6.63x 10-34 J*s
21. What is the frequency of light with a wavelength of 9 ´ 104 m?
22. Find the energy in Joules for a 500nm wavelength.
23. Find the weighted average for Calcium if Calcium- 40 is 90% abundant, Calcium 38 is 6% abundant and Calcium 42 is 4% abundant. (You must show work for full credit)
Short answer/essay: answer the following in the space provided.
25. Write the full or abbreviated electron configuration for indium.
29. State the four parts of Dalton's atomic theory and explain how it supports the law of conservation of mass.